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Finding the Fourth Proportional to 627,408.89, 865,829.02 and 340,930.52

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Solution

The fourth proportional to 627,408.89, 865,829.02 and 340,930.52 is: 470,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,408.89 : 865,829.02 = 340,930.52 : x
  2. Step 2: Convert to fraction form
    627,408.89/865,829.02 = 340,930.52/x
  3. Step 3: Cross multiply
    627,408.89x = 865,829.02 × 340,930.52
  4. Step 4: Simplify right side
    627,408.89x = 295,187,532,838.22
  5. Step 5: Solve for x
    x = 295,187,532,838.22/627,408.89
  6. Step 6: Final answer
    x = 470,486.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.